Navigator Error

[YoungLYR2099]

Main error

Application notebook launch may have produced errors.

Traceback

[I 16:09:55.325 NotebookApp] The port 8888 is already in use, trying another port.
[I 16:09:55.463 NotebookApp] Serving notebooks from local directory: C:\Users\UIC
[I 16:09:55.463 NotebookApp] 0 active kernels 
[I 16:09:55.463 NotebookApp] The Jupyter Notebook is running at: http://localhost:8889/?token=a32144725af2c31e08f2c7eab7f0de10a4b89cd04208b324
[I 16:09:55.463 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 16:09:55.464 NotebookApp] 
    
    Copy/paste this URL into your browser when you connect for the first time,
    to login with a token:
        http://localhost:8889/?token=a32144725af2c31e08f2c7eab7f0de10a4b89cd04208b324
[I 16:09:55.878 NotebookApp] Accepting one-time-token-authenticated connection from ::1
[I 16:09:55.881 NotebookApp] Refusing to serve hidden directory, via 404 Error
[W 16:09:55.934 NotebookApp] 404 GET /tree?token=091e25abb402951bcf421c057c421d456d9316622690da43 (::1) 56.00ms referer=None

System information

platform: win-64
version: 1.6.2
conda: 4.3.21
qt: 5.6.2
language: zh_CN
python: 2.7.13
os: Windows;10;10.0.14393;AMD64;Intel64 Family 6 Model 158 Stepping 9, GenuineIntel
pyqt: 5.6.0

[goanpeca]

See Issue jupyter/notebook#2382 for more information on how to fix this.

---

Please remember to update to the latest version of Navigator to include
the latest fixes.

Open a terminal (on Linux or Mac) or the Anaconda Command Prompt (on windows)
and type:

$ conda update conda
$ conda update anaconda-navigator
$ conda update navigator-updater